Our VHF\UHF repeater was on Mt. Haleakala which gave us a 250 mi radius. I got reamed and told don't do that again.
About a week later, I accomplished a second two-way communications with them again and prior to entering it into the log, I called the officer of the day over to confirm and then entered.
They checked with San Diego and I was good to go.
Tropospheric ducting.